Abstract
The article discusses the prerequisites and the process of creating an experimental bench for the study of external electromagnetic effects on rotor-bearing units in the work process. The control systems of the experimental setup and the electromagnetic device are presented, the latter is made in the form of 4 paired orthogonally located electromagnets. The percussion device can operate in a programmable mode. Flexible variation in speed and magnitude of the impact (according to a predetermined law of change) allows you to cover a wide range of possible external influences on the rotor unit. The tool for the automatic control of installation modules, as well as the collection and processing of experimental data, is software developed in the LabView visual programming environment. The drivers for matching the frequency converter and the controller, as well as all the software for the operation of the information-measuring system, the experiment and data processing, were written in the graphic programming language.
Highlights
Introduction and Problem formulationThe problems of ensuring the vibrational reliability of rotor units are an urgent issue of today
The specified amplitude-frequency characteristics (AFC) and the operability of such systems are primarily associated with support units [1, 2]
The use of elastically pliable plain bearings allows for reliable operation of the rotor assembly in a wide range of frequencies and loads, thanks to the adaptive bearing surface, necessary rigidity and high damping ability [3, 4]
Summary
The problems of ensuring the vibrational reliability of rotor units are an urgent issue of today. In addition to the internal oscillations of the rotor in the bearings caused by an imbalance, the influence of a rotation drive, etc., situations of external impact on the rotor assembly body arise [5]. These situations, despite the probabilistic nature, can lead to a significant change in the trajectory of the rotor, which at significant speeds can lead to contact with the bearing surface, deformation and destruction of the rotor-bearing unit, with subsequent failure of the rotor assembly [6]. In this case, it is necessary to control the dynamic effect to minimize time costs and obtain a complete picture in the studied object
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